Valve grinder



) Feb. 17, 1931. I p, ECKELS 1,793,308

VALVE GRINDER Filed Jan. 16, 1930 INVENTOR. .P. OQECKELzi '1 ATTORNEYS.

I grinding the valves and thus much time is Q5) fully explained in thefollowing description,

to indicate the same" sev'eral views. g Y i 'Thedrawlngs showa sectlonof anengin-e Patented 17, 1931 'vALvE Gamb an My invention relates tovalve grinders and more particularly to grinders for grinding valves ofmotor vehicle engines and aero plane englnes without removing the valvesfrom the engines; and the object is to provive simple devices forgrinding the valve.

and its seat simultaneously and to. devices which are adjustable todifierent sizes 5 of Valves. 'One advantageis that the valves are notdismantled or dis-assembled for 7 saved. Another advantage is thatthegrindmg is accomplished by simple manual opera,-

tion. Other objects 'andadvantages will be and the invention will bemoreparticularly pointed out in the claims. 7 7 1 Reference is had to theaccompanying i Q drawings which forma part of thisapplication. r

Fig. 1 1s a'sectlon of an engine cylinder,

. showing the position of the valve and its i v seat'during operationand showing'in detall the valve grinding devices, partly in section. 25i Fig. 3 is a I Fig. 2 is a plan view of the same.

grinders.

Fig. 4. is a section ofthe grinders and the of the protecting rollers. w

Similar characters of reference areused, parts throughout the armcarrylng the same and a section-of one valve casing and its seat 1 and.a valve 2 elevated therefrom to grinding position. The valve 2 is ofordinarytypev and the head thereof has the usual slot for use in thegrindfor engaging the valve 2, and an oscillating dle or lever 8rigidly'engages the chuck 4:.

V and a knob 9 has a swivel connection with the handle or lever 8." Inoperation, one

hand is placedon the handle 10 of the screw socket arms 11 radially ingoperation. A screw driver'8 is provided chuck 4 is mounted on the shankof thescrew driver. The chuck 4 is supported in posi *tion on the shank5 by a'collar 6 which is tendency to 'vibrateithevalve.

engages the 'knobi 9 for oscillating the chuck.

Thechuckl is provided'with a plurality v p 4 disposecb "flhe' grindingelements weenied bythe socket".

" UNITED ST A ES Y driver and thej other 11ml the operator f v arms 11'.The holders-for the grinders are. 3

divided into parts hingedly connected" to getherl" j The socket members12 secured in thef'socket arms. 11 by set screws lB andithe grindercarriers' 14 farefadj ustably connected I tothe carriersl byhinged ointsso" the grinders canfbe adjusted to valves and seats having difierentpitch '1 .Thus," there i double" adjustment for each pair. oiPgrind- .f

ers',' .I-'adi al for valves or difierent diameters v and vertlcalswlnging ad ust-mentsior valves havlng'd iierent"'p tchrry YEachicarrlerl 14 lis provided *w1th two "roll-' ers '15 andf 1 6 whichresist the tension of the valvespring'sand'hold the 'distance between'i7 each valve-andits seatconstant, that is; the

rollers hold the seatand the valve; at a fixed distande apart. Therollers 515 "and 7 16 I also relieve 'ffriction"by reason that "theyroll a li ament-valv and its seatiboth: The plan view of the ad ustablegrinders or f hones are carried by"; springs 17 thejca'rrier' l4 andsecured therein-bypins 19.

Therhoneffioxoperates onith'evalveand the l i crates on the valveseat22.3":Tl1e and 18 ihave the proper tension" hone 21 o pri 1 fOrhOlding-the 'h n 'sjagainst the surfaces N to begroun.d.

In operationfthe'screwdriver:3 is inserted while thechufck is beingoscillated. The. op-

iandi l8 which hav'e'ftheir shanks i insertedin erator places one handon the knob lQand holds the chuck. 4.1 in upright 'lposition and" placesthe other hand onth'e knob 9 -and oscillates'the socketarms and thegrinders. There ,-'being-a pluralityof the sockets and grindersoperating simultaneously, Ethere is not .inuch i What I'claim, 1's gq 1. 1A .valve grindercoinpr smg. a chuck dially disposed, 1meansfori'rotatably mount;

ing said chuck. onavalve' headfcarrier arms rigidly connected to saidsocketarmggrind other grinding element adapted to' grind rigidlyconnected to said socket arms, '-1neans er carriers hingedly connectedto said car-- rier arms, rollers carried by said grinder carriers forspacing'a valve fromits seat and pairs of grinding elements carried bysaid grinder carriers, one grinding element of each pair adapted togrind the valve and the the valve seat.

2. A valve grinder comprising a chuck provided With a plurality ofsocket "arnisradially disposed, means for rotatablymounting said chuckon a valve head, carrier arms for fixedly adjusting said carrier arms nsaid socket arms, grinder carriers 'hi'ngedly connected to said carrierarms, rollers operatively connected to said grinder carriers for spacinga valve from its seat, pairs of grinding elements yleldingly connectedto said grinder carriers, one element of each pair being adapted togrindthe valve and the other element adapted togrind the valve seat 7 3. Avalve, grinder comprising a standard,

7 to :be fixedly connected to a valve, a chuck rotatably mounted on saidstandard, a collar rigidly connected to saidlstandard for supportingsaid chuck, saidcliuck having a plurality of socket arms radiallydisposed thereon, carrier arms lfiiredl y adjustable in said socketarms, grinder carrying arms hingedly connected to said carrier arms andprovided to be fixedlyconn'ected to a valve, a chuck rowith for grindingthe valve and its seat simuli taneously,and means for oscillating saidchuck. I V

in testimony whereofil setmy hand, this tatably mountedon said standardand .pro-

vided With *a plurality of radially adjusti able arms,- meansadjustalo'ly connectedto said v armsffor spacing a valve from its seatand carrying grinders .yieldinglyconnected there- 2nd day of January,1930. V

v PAR-LO. EGKELS;

